Answer:
Vitamin A.
Explanation:
Vitamins are the important chemicals that are required in the body in a very small amount but their deficiency in the body may leads to various disease and health related problem.
Vitamin A plays an important role in the osteoblast activity. A girl height growth has stopped because her bones are not going through remodeling process. Vitamin A is necessary for the bone remodeling process. A girl has been suffering from the deficiency of Vitamin A.
